U.S. intelligence failed "in a potentially disastrous way" in missing a failed plot to blow up a Detroit-bound airplane on Dec. 25, a visibly angry President Barack Obama said Tuesday after meeting with his top national security advisers. "We have to do better and we will do better and we have to do it quickly," Obama said at the White House. Obama ordered reviews of the U.S. terrorism watch-list system and air-traveler screening procedures following the alleged attempt by Umar Farouk Abdulmutallab to blow up the Northwest Airlines flight on Christmas Day. Preliminary findings will be out "in the next few days," Obama said. Obama said that the U.S. watch-list system isn't broken but "the failure to add Abdulmutallab to the no-fly list shows that this system needs to be strengthened." Obama also said he still plans to close the prison at Guantanamo Bay but won't transfer Yemeni detainees back to Yemen at this time. Obama has charged that the Yemeni branch of al-Qaeda trained and equipped Abdulmutallab. Obama said he'll announce further steps in the days ahead to disrupt attacks including enhanced passenger screening for air travel. The attempted bombing, meanwhile, hasn't had a significant impact on businesses and their travel plans for the New Year, according to a survey released Tuesday by the National Business Travel Association. President Obama said Tuesday that U.S. intelligence agencies could have prevented the attempt to bomb an airliner on Christmas Day, and used a grim and forceful White House statement to demand rapid improvements in efforts to protect Americans from attack. "This was not a failure to collect intelligence," Obama said after meeting with senior national security and intelligence officials, "it was a failure to integrate and understand the intelligence that we already had. . . . That's not acceptable, and I will not tolerate it." The administration has been criticized by Republicans and some Democrats for intelligence lapses that allowed Nigerian Umar Farouk Abdulmutallab, allegedly carrying undetected explosives, to board the Amsterdam-to-Detroit flight despite reports that he had met with al-Qaeda-affiliated extremists in Yemen known to be planning to attack the United States. "Our intelligence community failed to connect those dots," the president said. "We have to do better, and we will do better, and we have to do it quickly. American lives are on the line." On Obama's first full day back at the White House after an 11-day vacation in Hawaii, his words were far sharper than his previous comments since the incident, conveying a controlled anger about what he had heard in preliminary reviews of what went wrong. A White House official quoted Obama using even more blunt language in the Situation Room meeting, according to media reports. "This was a screw-up that could have been disastrous. We dodged a bullet, but just barely," he reportedly said. Although Abdulmutallab allegedly tried to detonate the explosive as the plane started its descent into Detroit with nearly 300 people aboard, it did not ignite because of "technical difficulties," according to a statement by al-Qaeda in the Arabian Peninsula claiming responsibility for the plot. Obama also warned the 20 officials gathered at the meeting that he would "not tolerate" the finger-pointing that has emerged among some of their agencies, media report citing the official said. No such blame-shifting was reported during the meeting, and officials were said to accept responsibility for their respective failures. Director of National Intelligence Dennis Blair said the president's message had been received. "We got it. . . . The system did not catch Umar Farouk Abdulmutallab and prevent him from boarding an airliner and entering the United States. We must be able to stop such attempts." Blair, whom some Republicans have said should be fired, said intelligence agencies "need to strengthen our ability to stop new tactics such as the efforts of individual suicide terrorists." In his public statement, Obama listed steps that have been taken, including expansion of the U.S. "no-fly" list to include people with Abdulmutallab's profile; enhanced screening for anyone flying to the United States from an expanded list of "countries of interest"; additional screening and security on all domestic or U.S.-bound international flights; and an automatic check of terrorism suspects to determine whether they possess valid U.S. visas. "In the days ahead," Obama said, "I will announce further steps to disrupt attacks, including better integration of information and enhanced passenger screening for air travel." A summary of the ongoing review of the terrorist watch-listing system that did not identify Abdulmutallab, he said, will be made public "within the next few days." The changes, including the addition of hundreds of people to airline watch lists, have prompted accusations by civil liberties groups that the administration is profiling passengers on the basis of national origin and religion. Addressing Republican demands that he revisit his plans to close the U.S. military prison at Guantanamo Bay, Cuba, Obama also said he has suspended the repatriation of least 30 Yemenis already cleared for release by a Justice Department-led interagency review. Nearly half of about 200 detainees remaining at the prison are from Yemen. But he said he will continue with already delayed plans to close the facility, which he said "has damaged our national security interests and become a tremendous recruiting tool for al-Qaeda." "In fact," he added, "that was an explicit rationale for the formation of al-Qaeda in the Arabian Peninsula."